Hungary Moves to Shut Down Battery Plants Over Pollution, Adds New Watchdog Agency for September

Hungary's break with its own EV battery strategy is now moving from campaign promise to enforcement action. Environment Minister Laszlo Gajdos has confirmed the government will shut down battery plants that violate environmental rules, and Tisza party lawmaker Zsolt Tarkanyi says a new national authority to monitor and sanction polluters is set to launch in September, according to Reuters.

Since 2021, Viktor Orban's government pulled in roughly 26 billion euros in foreign investment, mostly from South Korean and Chinese battery makers, turning Hungary into one of Europe's biggest hubs for EV battery production, per the government's own tally cited by Reuters. Peter Magyar's Tisza party ran against that model this spring, campaigned on tighter oversight of the plants, and won the April election in a landslide.

The Semcorp Shutdown

The clearest sign the new government means business: a government office suspended the production license of Semcorp, a Chinese battery parts maker, in late June after monitoring wells around its Debrecen-area plant showed large-scale aluminum contamination, Reuters reported. Tarkanyi, who represents Debrecen, said the factory will stay closed "for a long time." Semcorp told Hungary's state news agency MTI it has launched its own investigation into the cause of the pollution. Semcorp's press office did not respond to Reuters' questions about how a prolonged closure would affect operations.

Gajdos and Tarkanyi visited Debrecen together and the minister said the coming enforcement body will apply what he called "extremely stringent" standards, according to Reuters. Separately, per coverage from a battery-industry news outlet, Gajdos said industrial development had been overprioritized for 16 years and pledged to raise environmental fines to "the strictest level in Europe."

Fines Tied to Revenue, Not Flat Fees

Tarkanyi plans to propose legislation that would set pollution fines as a percentage of a company's turnover rather than the current fixed-dollar penalties, Reuters reported. The change is meant to make fines actually sting for multinational manufacturers instead of functioning as a cost of doing business.

He pointed to Samsung SDI's plant in the town of God as the case that shows why the current system doesn't work. Samsung SDI was fined multiple times between 2022 and 2023 for exceeding emissions limits there, and Hungarian police have opened four separate criminal procedures against the company since 2023, including a 2024 investigation into environmental damage and occupational endangerment and a 2026 inquiry into waste management violations, according to Reuters. Samsung has said, before the election, that its Hungarian factory strictly complies with environmental and safety regulations. The company's environmental license there was temporarily suspended at one point.

The BYD Labor Allegations Are a Separate Track

There's a second, distinct controversy running alongside the pollution crackdown: forced labor allegations at BYD's new plant in Szeged. China Labor Watch, a labor rights group, alleged in an investigation reported by The World from PRX that BYD's construction site relied on a web of subcontractors who flew in Chinese migrant workers subjected to excessive hours, seven-day work weeks, withheld wages, and fear of retaliation.

Hungarian officials in Csongrad-Csanad County launched their own investigation after that report. A county spokesperson told The World that authorities sanctioned three companies tied to the plant's construction and fined one of them, and said the county government office "continues to regularly monitor compliance with occupational safety regulations" and will pursue further proceedings if necessary. The findings of that investigation have not been released.

Labor rights advocates quoted by The World are skeptical the sanctions will produce real change, though the county's own statement is the only on-record confirmation of what's actually happened so far, and no broader findings have been made public. BYD itself is pushing forward regardless: the company's first European vehicle plant in Szeged is still on track for mass production in the fourth quarter of 2026, with localized battery production alongside it, according to reporting cited by an automotive news outlet.

What's Actually at Stake

Hungary spent five years and 26 billion euros building a pitch to foreign manufacturers: come here, we'll make it easy. Now the same government is threatening closures, revenue-based fines, and a new federal watchdog aimed squarely at those same companies. CATL's 7.3 billion euro, 100-gigawatt-hour plant in Debrecen is nearing production. Samsung SDI is expanding in God. BYD is racing toward Q4 output in Szeged. All three now sit under a government that campaigned explicitly on distrust of the industry Orban built.

The open questions are concrete. Will the new authority, once it launches in September, actually shut down plants beyond Semcorp, or will Semcorp remain the example case? Will Tarkanyi's turnover-based fine legislation pass, and at what percentage? And will Hungary release the findings of its BYD labor investigation, which have been pending since spring with no public timeline given by county officials.